Q. The percentage of a sample of HBr decomposes at 430 °C. is

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Q. Down the group, the hydrogen halides could be

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Q. Halogens dissolve well in

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Q. Oxidation of hydrogen halides become easier going

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Q. Halogens react with hydrogen gas to form

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Q. The halogens get less reactive

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Q. Poisonous gases are formed with reactions of halogens and sulfuric acid that's why it should be handled

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Q. The halogens reacts with non-metals forming

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Q. HCl is mostly visible in the form of

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Q. Each halogen atom tends to gain 1e⁻ when it reacts with

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Q. A precipitate will be formed if an unknown compound is added in dilute

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Q. The highly reactive element which can burn glass, metals, and water in a stream of gas is even when cold is

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Q. Hydrogen bromide have comparatively more resistant to decomposition than

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Q. Compounds which contain Cl⁻, Br⁻, and I⁻ will always react with

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Q. The smallest element in Group-VII is

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Q. Chlorine water added to sodium bromide will change its color to

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Q. A gas which has a strong foul smell of bad eggs is

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Q. Halogens are themselves reduced hence they are

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Q. A more reactive halogen can displace a less reactive halogen from a halide solution of the less reactive

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Q. Bromine (Br₂) is released during reactions as

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